21 Oct
2021
21 Oct
'21
10:30 a.m.
Hey, FoothillsGeek here! I saw this thread last night and checked to see if
I had a manual for it - it does not look like I do. Most of the Plessey
documents we received are for core memory boards.
However, when I indexed the docs we received, I did so by model number
(PM-xxxx) and not by part number. So, if I can find our stack of Plessey
docs, I'll flip through them again to look for the PN.
On Thu, Oct 21, 2021 at 8:49 AM steven--- via cctech <cctech at classiccmp.org>
wrote:
--
*Derek Newland* | (828) 234-4731 | derek.newland at gmail.com
On 10/19/2021 12:57 PM, Nigel Johnson Ham via
cctech wrote:
> I am trying to bring up an 11/23 system in a BA23 box, and the only
> memory i have is an obscure Plessey one. The only identification is the
> p/n 705920 with dash-100 in white ink. By counting the chips I make it
> 4MB, but it does not respond. Since it takes the full 22-bit memory
> space I can't see how any jumpers would change its accessibility. Does
> anybody have a manual?
FoothillsGeek on VCFed had a number of Plessey memory manuals and had
scanned
some, as mentioned here
https://www.vcfed.org/forum/forum/genres/dec/73251-dec-documents-on-manx